link rel=preload : How to Preload Key Requests with Browser Hints
https://www.holisticseo.digital“Link rel=preload” is a browser hint to provide resource loading prioritization to improve the web page loading performance and speed. Preload is a value for the “rel” attribute of the HTML “link” tag to fetch a web page resource earlier than others. To improve the initial contact with users by improving the user experience, preload can be used for certain types of web page elements such as fonts, images, or CSS and JS files.
When it is used carefully, it is a powerful page loading performance hack for user-experience and user-centric metric scores.
